/**
 * 生成 uuid
 * @returns
 */
export function e_uuid() {
    const s: any[] = []
    const hexDigits = '0123456789abcdef'
    for (let i = 0; i < 36; i++) {
        s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1)
    }
    s[14] = '4' // bits 12-15 of the time_hi_and_version field to 0010
    s[19] = hexDigits.substr((s[19] & 0x3) | 0x8, 1) // bits 6-7 of the clock_seq_hi_and_reserved to 01
    s[8] = s[13] = s[18] = s[23] = '_'

    const uuid = s.join('')
    return uuid
}

/**
 * 生成id
 * @param digit
 * @returns
 */
export function e_id(digit : number | undefined = 8) {
    return Math.random().toString(36).slice(digit)
}
